Experimental support for web components. This field stores a
reference to the component implementation. It was inspired by Mozilla's
x-tags project. Please note: in the future it may be possible to
extend Element from your class, in which case this field will be
deprecated.

Methods

Creates a new AnimationEffect object whose target element is the object
on which the method is called, and calls the play() method of the
AnimationTimeline object of the document timeline of the node document
of the element, passing the newly created AnimationEffect as the argument
to the method. Returns an Animation for the effect.